Originally Posted by NYCboy1212 Tallest Building in the world title ]
Here is a more recent jacking "plan". I wish it was clearer but it is what it is ...
This looks more acurate to what is actually happening on the structure.
The tiers from 16 to 26 can be made out on the right side. The pinnacle tiers 27 to 30 are not marked off. The crane is shown at ~section 22A which is the height it is right now - as I said ages ago it is high enough to finish the structure and does not need to rise any more.
The 5th drawing shows section 23B erected - which is not up yet on the structure but will be before jacking going by this. It also shows section 22 of the wing facing the crane up and if we look at the last drawing sections 22A and 22B of that wing will be erected after jacking.
Heres the one questionable thing. The pinnacle is at the height of the 6th drawing right now but section 23B is not up right now. Also we know that the pinnacle has not been jacked yet because in previous shots we saw that pieces were welded on top of what was there to get us to this height. Also we know that with the top of the pinnacle at 730m. the base of the 142.7m. long pinnacle pipe is right near the bottom of tier 16, not at the top of it as is shown in drawing 6. It is possible that this is an oversight or that this plan is from the 808m. design which would still make the base ~10m. too high in the drawing.
In drawings 9, 10, and 11 we can see the small wings of tiers 24, 25, and 26 being attached between jacking stages. The cladding and any fins will also be done before the next jacking stage.
After jacking as noted above the last 2 sections will be erected, all connections to the jacked pieces will be completed, and the cladding will be finished.
This plan is confirmation on what a few of us thought must have been revised from the earlier jacking plan we have. That earlier plan showed platforms that are not on the structure and the crane lower than what it is now among other discrepencies.
So (as long as they haven't revised this plan too much ...) once they put up section 23B jacking should begin shortly there after.
Top out may not be by year end but should be only a few weeks into '09 - we shall see.